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Maths Puzzle
Percentage
in chemistry class, 8 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
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Book Other Question
-10x^2+11x+24=20
For each of the ff. quadratic equations, (a) identify the conic section represented
(b) write the given equation in the standard form
(c) give the properties
(d) find the x and y-intercepts and
(e) sketch the graph.
1. 2x^2-2y^2+20y-75=0
2. 9x^2+4y^2-36x+8y+31=0
I need the answers now. Thanks!